Description: Place a steel ball in liquid nitrogen observing the initial leyden frost effect. Now place the ball in the flame of a bunsen burner. The reverse leyden frost effect causes the ball to be covered by frost while in the flame.

Purchased/Built: built

Setup Time: 1 hour

Quant. in Demo Room: 1

Demo References

Sutton

H-106

Place a brass ball into liquid air in a clear dewar and observe the initial leidenfrost effect. When the ball is cold, place it in a flame and observe the reverse leidenfrost effect as frost forms on the ball while it is in the flame.